2) Housing and construction-related data, including new residential construction (housing starts and building permits, national and regional), new residential (single-family home) sales [national and regional, issued jointly with U.S. Department of Housing and Urban Development (HUD)], and construction spending (value of construction put in place).

National Association of Realtors: primary data source for existing single-family home sales (monthly for the nation and four major regions, quarterly for states).News releasesData

U.S. Department of Commerce, Bureau of Economic Analysis (BEA)
Primary data source for Gross Domestic Product (GDP) and related data from the National Income and Product Accounts (NIPA); Gross State Product (GSP); personal income (national, state, and local areas); international balance of payments and related data (including U.S. current account); and monthly international trade (joint with U.S. Bureau of the Census).